air-jam: Instructions file for Codex

AGENTS.md

air-jam AGENTS.md is an instructions file for Codex, OpenCode from vucinatim/air-jam. It costs 2,228 tokens per session, scanned A, original, MIT.

A repository instruction file describing the engineering rules, goals, and development standards for the Air Jam project.

In plain words
What is it for?
Use it to guide development work on Air Jam, including its game framework, testing harness, agent workflows, and release processes.
Why use it?
It gives coding agents shared project context before they make changes, reducing inconsistent implementations.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is vucinatim/air-jam's own configuration. It tells Codex and OpenCode how to work on air-jam itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything air-jam configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vucinatim/air-jam. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/vucinatim/air-jam/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/vucinatim/air-jam

Made for: Codex, OpenCode.

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README.md
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Per session 2,228 This file is loaded in full into every session.
When invoked 2,228 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.02228 $0.02228
Opus 5.5 $0.00891 $0.00891
Sonnet 5.5 $0.00446 $0.00446
Haiku 4.5 $0.00223 $0.00223

Measured 13d ago against content hash 9fc4ad88e5b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

air-jam AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

AGENTS.md · 225 lines

How it starts

The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Contract

This repository owns Air Jam's public framework, standalone server, creator tools and reference games. Studio, Arcade, accounts, hosted policy, databases and production operations belong to the private product repository. Develop one framework; the product consumes its supported package exports.

Source separation is under review and unfinished. Do not merge the ownership removal while Railway automatically deploys from the old public product paths. The private product's separation plan owns the guarded source handover; green framework checks do not establish private deployment readiness.

Mission

Build and maintain a clean, minimal, and extensible codebase that can scale without unnecessary complexity.

Ultimate Vision

Air Jam is not only a multiplayer game framework.

The long-term goal is for it to become an AI-native game creation and evaluation harness where a single prompt can drive the full lifecycle of building, testing, polishing, publishing, and iterating on a game.

The intended end state is:

  1. a user can ask for a game at a very high level, such as "make a mario kart clone"
  2. Air Jam's development harness can orchestrate multiple specialized agents in parallel
  3. different agents can own gameplay logic, assets, audio, music, UI, polish, balancing, testing, and release preparation
  4. agents can run the game directly, inspect logs, inspect visuals, read authoritative runtime state, and control players without relying only on browser automation
  5. the framework exposes clean machine-usable contracts for controller actions, state inspection, runtime events, visual feedback, and evaluation loops
  6. the same contracts work for both human development and agent-driven development
  7. the system keeps iterating until the game reaches a high level of finish and polish rather than stopping at a rough prototype

This vision has architectural consequences now:

  1. runtime, transport, controller input, replicated state, signals, logs, and preview surfaces must stay explicit and machine-readable
  2. behavior should be accessible through strong contracts rather than hidden in UI-only flows
  3. local preview, hosted preview, runtime authority, analytics, and publish flows should converge on one coherent operating model
  4. agent control surfaces should be treated as first-class future product requirements, not afterthought tooling

Read the full file on GitHub · 225 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 13d ago Changed · -36 lines · -281 tokens per session 9fc4ad88e5b0
  2. 1mo ago Changed · +22 lines · +260 tokens per session d6da24275f1e
  3. 1mo ago First seen · 239 lines · 2,249 tokens per session scan A 9d053544fa12

Subscribe to this mod's changes

air-jam AGENTS.md is an instructions file published in the GitHub repository vucinatim/air-jam (8 stars, last pushed today), licensed MIT. It adds 2,228 tokens to every session, about $0.0089 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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